DH is a detective sergeant. He holds people's liberty in his hand, controls rape investigations and takes control of murder scenes. He has had to give evidence about finding bodies that have been searched for months. He keeps control on dozens of serious investigations at any one time and manages a small team of experienced detectives.
With this in mind, you would imagine that, having told him last week "can you ring your mates and tell them DD's birthday party is postponed until the same time, same place next Sunday" that I would not have just had the following conversation:
DH " Did you phone Steve and Mich and Mike and Lucy, T & V and Brian & Margaret to tell them that the party is tomorrow"
Me "No. I asked you to do that"
DH "I assumed you were doing it"
Me "Why would you think that when they are your friends and you know perfectly well I don't have their phone numbers. And why did you not just tell them when you phoned to tell them it was postponed. Jeez, you really could not organise a piss up in a brewery"
AIBU to wonder how the fuck anyone in senior management trusts my DH to manage a bag of Safer Neighbourhoods stickers, let alone a murder ?